Many old houses have no central heating at all or have old-fashioned systems that need to be updated. Correcting this problem will always increase the value of the property, it must be thoroughly investigated and done in conjunction with improving the overall energy efficiency of the building.
Efficiency improvements include:
- sealing any drafts around doors and windows (not air bricks)
- replacement of windows that are not repaired (double glazing)
- adding insulation to the attic
If the existing boiler is in a reasonable operating condition and has sufficient output for the heat needs of the building, always try to use it - with the exception of boilers that remove air from inside the house. If he has boiler sufficient capacity, you can add new radiators or underfloor heating to the existing system.